baber/WOPTO huggingface dataset:
Patent GB-844787-A (GB)
Title: Resilient mats and apparatus for formation thereof
IPC: B29C70/68
Filed: 1957-07-15
Abstract: 844,787. Mats. MITCHELL, R. L. July, 15, 1957, No. 22318/57. Class 142(4). [Also in Group V] A rubber or like mat 20 is provided with an insert 25 of a different colour, the insert having rearwardly facing projections 27 to retain the insert in a moulded backing  layer 24 of the mat. The upper surface of the mat may comprise a plurality of wiping fingers 23, and the insert 25 may comprise letters or words.
Patent GB-359552-A (GB)
Title: Improvements in or relating to variable speed transmission mechanism
IPC: F16D31/08
Filed: 1930-07-25
Abstract: 359,552. Variable-speed gearing. CHORLTON, A. E. L., 55, Lower Belgrave Street, Eaton Square, London. July 25, 1930, No. 22434. [Class 80 (ii).] Variable speed transmission mechanism comprises a series of gear wheels in constant mesh and capable of transmission at a plurality of fixed ratios, under the control of clutch or brake mech anisms, the arrangement being such that transmission is maintained during changes from one ratio to another. In one form, the driving shaft A, Figs. 1 and 2, has a sun wheel A<1> meshing with planet wheels B<3> carried by a spider secured to the driven shaft B ; the planet wheels also mesh with internal teeth of an annulus F, which has external teeth meshing with further planet wheels G, mounted in an outer casing G<2>. A pawl H<1> and ratchet teeth H permit rotation of the outer casing in one direction only. The planet wheels B<3> form part of a gear wheel pump having suction and delivery chambers B<4>, B<5>, and the planet wheels G part of a pump with suction and delivery chambers J3, J<4>. Transmission at the first ratio is effected by locking the annulus F, which is effected by operating valves N' to stop circulation of liquid in the outer pump, and a direct drive is subsequently effected by closing the valves J<2> of the inner pump. The speed of closing the control valves may be controlled by dashpot mechanism and these valves may be manually and/or governor actuated. Relief valves and a brake for the driven shaft may be provided. In a modified form, the outer planet wheels are dispensed with, and the annulus provided with ratchet teeth engaged by a pawl O, Fig. 4, a hydraulic or other clutch being provided in the driving shaft.
Patent GB-1440911-A (GB)
Title: Labelling mechanism
IPC: B65C9/18
Filed: 1972-05-12
Abstract: 1440911 Labelling KODAK Ltd 12 July 1973 [12 May 1972] 22443/72 Heading B8F A roll film spooling machine, Fig. 4 (not shown), for spooling lengths of backing paper cut from a continuous web 17 with film lengths F fed by a vacuum drum (not shown), incorporates a labelling and notching mechanism M comprising an hydraulic ram-reciprocated punch 21 and pressure pad 28 co-operable with a die 22 for simultaneously notching opposite side edges of the web and pressing a label length cut from a label strip 3 on to the web, and a pivoted knife element 14, which supports the sides of the strip and guides the strip over a fixed knife edge 15 and which is actuable simultaneously with the punch and pad to sever the label length from strip against the fixed knife edge 15. The knife element is pivoted downward by a spring- loaded plunger 26 carried by a punch arm 25 and is of inverted channel shape to guide the strip over the fixed knife edge and to facilitate moistening of the gummed underside of the strip by a felt pad 19 as the preceding label length is severed. The label strip is fed by a drum 4, which has projections 5 engaging in slots in the strip, and which is rotated stepwise by means of a one-way clutch 9, a ram-operated linkage 8, and a stop pawl 11. In a modification, Fig. 6 (not shown) the pressure pad is provided with an insulating block 30 carrying an electrically heated strip 31 for heat-sealing the cut label strip lengths to the web.
Patent GB-629490-A (GB)
Title: Improvements in or relating to the manufacture of oil-modified alkyd resins
IPC: C08G63/48
Filed: 1947-08-13
Abstract: A lower dialkyl ester of terephthalic acid, viz. an ester of an alcohol containing not more than 4 carbon atoms, is used as one ingredient in the manufacture of oil-modified alkyd resins to produce crystal-clear resins of short oil length and of low acid value.  The oil-modified alkyd resins may be made by the "fatty acid," the "fatty-acid fatty-oil" or the "alcoholysis" process, if desired in a solvent such as xylene or white spirit, and reaction, which may be with a catalyst such as sodium p  glycerate, potassium carbonate or litharge, continued until no more monohydric alcohol is evolved by reaction of the dialkyl terephthalate or until a suitable viscosity is reached.  In examples (1) castor oil, glycerol and litharge are treated under CO2, dimethyl terephthalate added and heating continued to produce a plasticizer suitable for, e.g. etherified urea-formaldehyde lacquers; (2) hydrogenated castor oil, glycerol and sodium glycerate heated and reacted with dimethyl terephthalate, the final heating being under reduced pressure to produce a similar plasticizer; (3) linseed oil, pentaerythritol and glycol are heated and cooled; pentaerythritol, glycol, phthalic anhydride and dimethyl terephthalate are added and reacted to produce a clear resin; (4) linseed oil fatty acids, glycerol and dimethyl terephthalate are reacted; (5) dehydrated castor oil acids, glycerol and dimethyl terephthalate are reacted.  The following polyhydric alcohols may be used: ethylene, propylene, butylene, diethylene, and triethylene glycols, glycerol, polyglycerol, sorbitol, mannitol, and pentaerythritol; the following polycarboxylic acids may be used: succinic, glutaric, adipic, sebacic, maleic, fumaric, itaconic, acetylene dicarboxylic, malic, tartaric, citric and phthalic acids or their anhydrides.  The fatty oils may be coconut, palm, castor, cotton seed, soya bean, sunflower seed, poppy seed, dehydrated castor, linseed, tung, perilla, oiticica, or the fatty acids derived from the oils.
Patent GB-686924-A (GB)
Title: Improvements in or relating to spectacle frames and spectacles
IPC: G02C9/02
Filed: 1950-09-14
Abstract: 686,924. Spectacle frames. CROOKES OPTICAL WORKS, Ltd., and HILLMAN, D. C. S. Nov. 19, 1951 [Sept. 14, 1950], No. 22658/50. Class 97 (i). A spectacle frame having a holder for an additional lens segment pivotally mounted on the frame so that the additional segment is capable of lying alongside a side arm or adjacent a fixed lens to form a bifocal lens system is characterised in that the holder for the lens segment is pivoted for movement about two axes, one parallel or substantially parallel to the side arm hinge axis and the other at right angles or substantially at right angles thereto. As shown, the holder 24 of the lens segment is carried by an arm 22 connected by a ball 21 and socket to a lug 20 on a bar 19 pivoted to a pin 13 to which are pivoted the plates 16 and 17 of the hinge connecting the temple arm 10 to the lens frame 12. By means of the ball and socket connection the holder 24 may be rotated through 180 degrees about a horizontal axis from the position shown in Fig. 2, and, by rotation of the bar 19 about the axis of the pin 13, be located in a suitably shaped recess in the side arm, which is preferably of the " library " type. A pin connection may be used instead of the ball and socket, and the bar 19 may be separately hinged to the side arm 10 or the side arm hinge plate 16.
Patent GB-444456-A (GB)
Title: Improvements in and relating to wheeled toys
IPC: A63H17/41
Filed: 1935-08-12
Abstract: 444,456. Toys. GRAHAM, E. M., and GRAHAM, R. L., (trading as GRAHAM BROS.), 8, Bradford Avenue, Redcross Street, London. Aug. 12, 1935, No. 22683. [Class 132 (iii)] A toy vehicle driven by clockwork mechanism 2 has a direction changing wheel 10 for preventing the vehicle leaving the edge of a running surface, the wheel 10 being wholly of metal, toothed or notched on the whole or part of its periphery 13, eccentrically mounted on the spindle 9 inclined to the longitudinal axis of the vehicle, and perforated at 11 and sometimes weighted at 12 so that the toothed part 13 which is nearest the spindle 9 is normally lowermost. The rear axle 3 has loosely mounted on it a wheel 4 and has secured to it a nearside driving wheel 5 the tread of which is covered with sand or emery paper 14. The front wheels 21 are rotativelv mounted on the axle 15 carried by a lug 16 punched from the underside 1 of the vehicle and provided with a perforation 17 of such diameter as to allow of rocking of the axle 15 in a vertical plane. Rocking of the axle 15 in a horizontal plane is prevented by a strip 18 having at each end lugs 19 disposed immediately in front of the axle 15. The vehicle is weighted at 20.
Patent GB-479672-A (GB)
Title: Improvements in or relating to cages for anti-friction bearings
IPC: F16C33/54
Filed: 1937-08-18
Abstract: 479,672. Roller bearings. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN. Aug. 18, 1937, No. 22697. Convention date, Sept. 18, 1936. [Class 12 (i)] A cage for roller bearings comprises a pressed one-piece sheet-metal cylinder 1 with cruciform apertures for the rollers, the portions 13 between the rollers being doubled so that the corner pieces 11 overlap the rollers and retain them in position radially. The cage blanks are first shaped as in Fig. 2, and the parts 13 are doubled up after assembly of the rollers. If the inner race ring has side flanges 5, the parts 13 project radially inwardly, but if the outer race ring has side flanges the parts 13 project radially outwardly.
Patent GB-1360723-A (GB)
Title: Preparation of ethylene polymers
IPC: C09D123/08
Filed: 1972-05-15
Abstract: 1360723 Ethylene copolymers E I DU PONT DE NEMOURS & CO 15 May 1972 [14 May 1971] 22743/72 Heading C3P A continuous high pressure, free radical ethylene copolymerization process comprises (a) introducing into a reactor ethylene and up to 15 mol per cent of at least one vinyl ester of a C 1 -C 4  alkanoic acid, acrylic or methacrylic ester of a C 1 -C 4  alkanol, acrylic acid, methacrylic acid, maleic acid or maleic anhydride, (b) maintaining monomers and initiator in contact in the reactor at 100 to 250‹ C. and 1000 to 2500 atmospheres gauge until desired conversion is obtained, (c) removing reaction mixture from the reactor, (d) reducing pressure by first let-down means such that reaction mixture enters a first separator at 100 to 400 atmospheres gauge, (e) separating from the reaction mixture in the first separator 90 to 97 weight per cent of the unreacted monomers, (f) further reducing pressure by second let-down means such that reaction mixture enters a second separator at 0 to 5 atmospheres gauge, and (g) separating from the reaction mixture in the second separator substantially all of the remaining unreacted monomers, which process also comprises in-line addition of 5 to 50 weight per cent of molten petroleum, polyethylene or Fischer-Tropsch wax to the ethylene polymer reaction mixture after the pressure has been reduced to below 250 atmospheres gauge and after at least 90 weight per cent but not more than 97 weight per cent of the unreacted monomers have been separated from the reaction mixture. The polymer may be a copolymer of ethylene with vinyl acetate or isobutyl acrylate, with or without methacrylic acid. The wax may be between the second let-down means and the second seporator, at one or more locations. The compositions may be used for coating paper, board, wood and metal objects, and as adhesives, optionally in admixture with rosin derivatives or styrene, olefin or terpene resins. Examples describe the preparation of compositions and concentrates of ethylene/vinyl acetate copolymers and paraffin wax.
Patent GB-410726-A (GB)
Title: Interlinking street, road, and pavement covering, using interlinking special made bricks
IPC: E01C5/16
Filed: 1932-08-15
Abstract: 410,726. Paving; bricks; pavement lights. ANDERSON, C., 146, Maitland Street, Bloemfontein, South Africa. Aug. 15, 1932, No. 22796. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 26, 1932]. [Classes 20 (iii), 87 (i), and 107.] A road or pavement consists of iron or steel bricks which are connected together by iron links adapted to engage corresponding holes in the abut ting side faces of adjacent bricks, and a filling of tar, pitch, lead or similar material is provided in the spaces between adjacent bricks. The bricks are also provided either with holes in the upper faces to receive a filling of pitch, tar, lead, or similar material, or, when the bricks are arranged in an iron frame or on girders to constitute a pavement light, with holes extending vertically through the bricks to receive glass or other transparent material. The form of the brick is shown in the Figure two holes being provided in each of the side faces of the brick and one hole in each end face. Bricks of curved form in plan are used at corners and curves. The bricks may be laid on a bed of gravel or concrete.
Patent GB-1508897-A (GB)
Title: Heat-treating method for metal film resistor
IPC: H01C17/26
Filed: 1975-05-23
Abstract: 1508897 Heat-treating resistive films TATSUTA DENSEN KK 23 May 1975 [21 Aug 1974] 22865/75 Heading C7U [Also in Division H1] The TCR of a resistive metal, e.g. Ni-Co, film, formed e.g. by electroless plating, sputtering or vapour deposition, is adjusted by heating in an oxidizing atmosphere at atmospheric or reduced pressure. The heating is between first and second critical temperatures, second and third critical temperatures, and then above the third temperature or if the film is so thin that internal oxidation takes place, above the second temperature. The critical temperatures are defined. The film is given a preliminary heating step in a non- oxidizing atmosphere. The substrate may be a fosterite rod.
Patent GB-797174-A (GB)
Title: Improvements in or relating to processes and compositions for dyeing hair and similar fibres
IPC: A61K8/49
Filed: 1956-07-24
Abstract: Hair or other keratinous fibre is dyed by applying an aqueous composition comprising 5 : 6-dihydroxyindole and ammonia, an ammonium salt or an amine.  The dihydroxyindole may be formed in situ by the hydrolysis of 5 : 6-diacetoxyindole.  Specified ammonium salts are ammonium carbonate and triammonium phosphate, specified amines being mono- or triethanolamine, morpholine, hydrazine, diethylamine and hydroxylamine.  The composition may also include oxidizing agents such as sodium-bromate, -perborate or -percarbonate, ammonium persulphate and hydrogen peroxide. Oxidation catalysts such as manganese-sulphate or -lactate, cobalt chloride, ferric chloride, cupric chloride and ammoniacal silver nitrate, may be added to the composition or applied to the hair as a subsequent treatment. Reducing agents e.g. thioglycollic acid, and swelling or penetrating agents, e.g. urea, thiourea, formamide, acetamide, ethyl alcohol, acetone, dioxane, 2-butoxy-ethanol and other glycol monoalkyl ethers, may also be included in the composition.  The composition may be emulsified with, for example, glycol stearate, to form a cream. Specification 710,134 is referred to.
Patent GB-293228-A (GB)
Title: Improvements in or relating to striking or boring tools
IPC: E02D3/061
Filed: 1927-08-31
Abstract: 293,228. Pfl³ger, A., and Haage, K. Aug. 31, 1927. Rammers.-A striking tool, such as a paving ram, having an impact element connected to the cylinder of an internal-combustion engine, comprises a rod carried by the piston and adapted to bear against the surface to be operated on, and of such length that when the piston is at the top of the cylinder the end of the rod is spaced away from the striking face of the impact element by an amount corresponding to the suction stroke of the piston. The ram 2 is rigidly connected to the cylinder 1, the head 3 of which carries handles 4 connected by springs 8 to cross arms 7 secured to the piston-rod 6. A spring-pressed lever 10, Fig. 5, pivoted at 9 on the cylinder head, normally maintains a sleeve 13 and suction valve 14 in the open position shown; air is admitted through the air jet 15 and fuel through a nozzle 16 whilst extra air may enter through the passages 18, 19. In the position of rest, Fig. 1, with the ram 2 and rod 6 resting on the ground, the space between the piston and the head .3 is filled with fuel mixture. The valve 14 is closed by depressing the lever 10 and the mixture is ignited by any suitable means, e.g. a sparking plug and contacts closed by depressing the lever. At first, the rod 6 remains stationary whilst the cylinder and ram are lifted by the ignition of the charge, but at the extreme position shown in Fig. 3, after the cylinder has exhausted through .exhaust ports, the tensioned springs 8 lift the piston, which is thereby driven against the head 3 to complete the expulsion of exhaust gases through the passages 18, 19, the lever 10 having meanwhile being released. The ram then falls and the piston and rod 6 return to the position of Fig. 1, drawing another charge into the cylinder. The hand-lever 10 may be connected to the suction valve by a coupling which is released by the explosion, as in the modification shown in Figs. 6, 7, wherein a collar 29 at the upper end of the stem 27 of the valve 14 is engaged by a weak spring 42 so that the valve is normally held open but is adapted to be lifted to close the valve through the intermediary of a heavier spring 30 and bush 28 loose on the valve stem by means of a fork 26 on an arm 24 mounted on the pivot 9 of the hand-lever 10 and locked to move with the lever by a pivoted pawl 22 engaged by a spring 23. When the charge is fired, the pressure of the .explosion acts through an aperture 46 on an auxiliary piston 47 and piston-rod 49, the latter lifting the tail 50 of the pawl 22 and releasing the arm 24, thereby causing the valve 14 to be opened by the spring 42. The fuel mixture enters the cylinder through the ducts 32, chamber 33, ducts 34, chamber 35, ports 36, and plate valves 37, whilst the combustion gases escape through the outlet chamber 39, ports 40, and plate valves 41. The handles 4 and transverse rod 7 may be replaced by guide-arms sliding on rods secured to a framework.
Patent GB-1518501-A (GB)
Title: Apparatus for computing the discrete fourier transform
IPC: G06F17/14
Filed: 1975-08-13
Abstract: 1518501 Digital calculating NATIONAL RESEARCH DEVELOPMENT CORP 13 Aug 1975 [22 May 1974]. 22907/74 Heading G4A Discrete Fourier transformation (or its inverse) is performed on computer by adding and/or subtracting those values (samples) of the function to be transformed which require to be multiplied by the same (apart from sign) sine or cosine value in forming a given value (sample) of the transform, then using the results to obtain the values of the transform (viz. by multiplying by the sine or cosine value and summing as appropriate). If the function is complex, real and imaginary parts are treated separately, followed by addition of the final results. A special-purpose computer (a ROM may hold the algorithm programme) or a suitably-programmed general-purpose computer may be used. The algorithm, the mathematics of which are disclosed, uses an n x n matrix (where n is the number of samples) with entries +1, -1,0 to specify which samples are to be added, which subtracted and which ignored in performing the first stage above (i.e. prior to the multiplication by the sine and/or cosine values), a definition of this matrix being given which is recursive on the number of samples.
Patent GB-740654-A (GB)
Title: Improvements relating to vehicle hand brake arrangements
IPC: B60T7/10
Filed: 1953-08-21
Abstract: 740,654. Brake-operating mechanism. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and KERSHAW, J. W. G. Aug. 6, 1954 [Aug. 21, 1953], No. 23073/53. Class 103 (1). In a vehicle hand brake lever arrangement of the kind in which the hand brake lever 10 has normal movement to operate the mechanical linkage 12 to the brake drums and is fitted with a hand grip catch 13 arranged to move a pawl 15 into and out of engagement with a fixed ratchet 16 to lock and release the brake lever, the pawl mechanism is provided with additional lever mechanism, actuated by the grip catch 13 to control the operation of the control valve 24 of a servo-braking mechanism, the control valve 24 being inoperative when the grip catch is released. Fig. 3 illustrates one embodiment in which the hand brake lever is in the " brake on " position and mechanical hand braking through mechanical brake linkage 12 is assisted by pneumatic braking by depressing fully the grip catch 13 which operates the pivoted lever 19 to open the valve member 23 to admit pressure fluid from a reservoir through port 7 to the brake cylinders through port 8; an exhaust port 5 in the member 22 being fully closed. When the hand brake lever is fully applied, the grip catch 13 may be released so that the pawl 15 re-engages the ratchet 16 and the lever 19 and link 21 are returned to their positions shown in the original " off position " of the hand brake lever shown in Fig. 1 in which the pressure in the braking cylinders is released to atmosphere through exhaust port 5. An alternative arrangement is described in which the control valve 24 is of the progressive type and is adapted to be set ready for action by the grip catch 13 but is actually operated by the hand brake lever 10 itself so that the pressure in the brake cylinders is proportional to the distance through which the brake lever 10 is moved in the " brake on " direction. Other modifications to the two arrangements described above are described in the Specification.
Patent GB-1498537-A (GB)
Title: Toothpastes
IPC: A61K/
Filed: 1975-05-27
Abstract: The toothpaste contains sodium bicarbonate as abrasive to only a smaller extent. An abrasive which is insoluble in water and is compatible with sodium bicarbonate is present to a greater extent. This other abrasive can be silicon dioxide, aluminium oxide, a silicate or a carbonate. The abrasives are dispersed in an aqueous medium which retains moisture. Besides additional thickeners, the paste contains organic surface-active agents, anticaries agents and sweeteners and flavourings. The toothpastes display pleasant cosmetic and good physical properties on use as well as considerably reduced foam formation and are, moreover, suitable for packaging in unlined aluminium tubes.